Brisbane City Council assures residents it is mowing public spaces more than the previous Labor administration did. Photo: Louise Kennerley

Cr Quirk said "extremely wet" conditions meant grass around the city couldn't be cut as often due to the risk of gouging out land or creating uneven surfaces.

"There are a couple of contractors that we are working with, but also working to make sure they understand the terms of those contracts and we are making sure that they will deliver on it," he said.

Bureau of Meteorology senior forecaster Brett Harrison said there were 39 wet days in Brisbane in November, December and January.

He said last month there were 17 wet days - about double the January average.

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Opposition Leader Milton Dick blamed the council for choosing contractors who he believed couldn't do a proper job.

"As a direct result of your poor decision-making, Brisbane parks, footpaths and median strips are a complete mess with parents publicly complaining they're too scared to take their children to council's parks for fear of snakes in long grass," he told the council meeting.

But Lord Mayor Quirk said the grass cutting during the year was more frequent under the LNP administration than with Labor.

He claimed parks were trimmed 18 times per year on average, up from Labor's 16. Major roads went from 12 to 18, and minor roads increased from nine to 15.

Brisbane City Council signed new grass cutting contracts with 16 companies in November to help maintain the 784 million square metres of grass in parks and along roadsides. That equates to about 78,400 football fields.

A council spokeswoman said the city had 2000 parks which were usually trimmed twice a month between November and March, and then cut less frequently in drier months.